Testing Waters: Supertech SUB + Shims and Tomei VVT cams
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Update:
This is on pause, I may try to run this and document for science
Some stuff came up and I'm unsure if I am ready to tackle the dark arts of Piston - Valve clearances with a cam phaser. No shops in the area will touch this project, and aside from mailing my motor out to have it checked to find the intake cam sweep before interference, I am at a point where budget for other repairs and timelines are now in the mix.
I have a set of new (installed but never run) Supertech cam followers, BP6D Tomei Cams, and an assortment of shims. I'm not looking to lose a ton on these since they are for a pretty targeted audience, but I will shave off some cost since hands have been on them. I can forward the receipts for all these as desired. Again, I'm just exploring my options since now I'm looking at a motor rebuild and some body work.
What is being sold:
Supertech Cam Followers
Supertech lash caps
Tomei BP6D VVT Intake Cam
Tomei NB Exhaust Cam
Asking $1500 shipped
This is on pause, I may try to run this and document for science
Some stuff came up and I'm unsure if I am ready to tackle the dark arts of Piston - Valve clearances with a cam phaser. No shops in the area will touch this project, and aside from mailing my motor out to have it checked to find the intake cam sweep before interference, I am at a point where budget for other repairs and timelines are now in the mix.
I have a set of new (installed but never run) Supertech cam followers, BP6D Tomei Cams, and an assortment of shims. I'm not looking to lose a ton on these since they are for a pretty targeted audience, but I will shave off some cost since hands have been on them. I can forward the receipts for all these as desired. Again, I'm just exploring my options since now I'm looking at a motor rebuild and some body work.
What is being sold:
Supertech Cam Followers
Supertech lash caps
Tomei BP6D VVT Intake Cam
Tomei NB Exhaust Cam
Asking $1500 shipped
Last edited by psyber_0ptix; 08-09-2018 at 01:06 PM.
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Also....After the new head is installed, the current head would be available with +1 O/S valves and supertech double valvetrain. It just needs to be inspected and things replaced as needed as i'm getting poor leakdown in cylinder 2
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Still considering. Just testing waters for now. Throwing in stock cams is the easy button cause I can just slap the head on and go.
But I can always try the clay bit. It's just figuring out what angle will become new max when advancing intake.
Gotta do more research on minimum clearances.
But I can always try the clay bit. It's just figuring out what angle will become new max when advancing intake.
Gotta do more research on minimum clearances.
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My gut is in the same place as m2f. These engines are non-interference in stock form. So at full stock lift, TDC, there is clearance. The cams add what, a mm of lift and a little duration? Even at 50 deg BTDC advance, is there an issue?
I am very much in the pre-school stage of my CAM stuffs education, but have started my research, as this is probably the next logical upgrade for me.
I am very much in the pre-school stage of my CAM stuffs education, but have started my research, as this is probably the next logical upgrade for me.
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My gut is in the same place as m2f. These engines are non-interference in stock form. So at full stock lift, TDC, there is clearance. The cams add what, a mm of lift and a little duration? Even at 50 deg BTDC advance, is there an issue?
I am very much in the pre-school stage of my CAM stuffs education, but have started my research, as this is probably the next logical upgrade for me.
I am very much in the pre-school stage of my CAM stuffs education, but have started my research, as this is probably the next logical upgrade for me.
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I also thought there where some cases of exhaust valve interference on BP4/6 engines. But I don't want to fuel conjecture without finding links of the actual cases. I'm at work so that's information to be researched later
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Originally Posted by psyber_0ptix
Still considering. Just testing waters for now. Throwing in stock cams is the easy button cause I can just slap the head on and go.
But I can always try the clay bit. It's just figuring out what angle will become new max when advancing intake.
Gotta do more research on minimum clearances.
But I can always try the clay bit. It's just figuring out what angle will become new max when advancing intake.
Gotta do more research on minimum clearances.
![Laugh](https://www.miataturbo.net/images/smilies/laugh.gif)
Here is from the FSM (on my phone so I couldn't embed)
![Testing Waters: Supertech SUB + Shims and Tomei VVT cams-photo953.jpg](https://www.miataturbo.net/attachments/miata-parts-sale-trade-5/221549d1533831928t-testing-waters-supertech-sub-shims-tomei-vvt-cams-photo953.jpg)
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Thanks AA-Ron That's pretty close then to the specs listed for the cam except the exaust side is a bit tighter.
What I find interesting are the installation notes. Aside from SUB conversion requirements, it says no modification to VVT [angle] adjustment and even the ECU
que??
I might keep these and just document the process and impeding carnage for science since it's hard to find any build data on this setup. Much like the EFR7163; I still haven't seen a completed #sendit dyno run on a miata. It would be sad if these cams where a hot mess for the cost. But meh, new iteration. Smurfette v3.0
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As far as I know, this is the first time the head has been resurfaced. It was pulled from a stock motor and completely stripped, pnp'd, new valve seats, guides, SUB conversion and valve train. Only reason I got these cams was because it was impossible to find shims or rather, there was no clearance with the stock 36mm cam base circles. I wasn't comfy with tipping the valves if they where nitride coated and there was a host of other issues with Supertech quality control that just made this the easy button.
I forgot that there were thicker head gaskets out there, but that also affects the squish
I forgot that there were thicker head gaskets out there, but that also affects the squish